Earlier this week, we heard that Mercedes-Benz will be introducing its nine-speed automatic transmission in Europe, but while this 9G-Tronic will first launch over there in the E-Class, we'll get our first crack at this gearbox in the 2015 CLS-Class. According to Edmunds, the nine-speed CLS will go on sale in the US next fall before eventually spreading to almost all other Mercedes models, but there is no word as to when this would occur.